Blockchain 100 question 58

1. Compared with centralized trading platform, what are the advantages and disadvantages of decentralized trading platform
since 2013, many decentralized trading platforms have emerged. Different from the centralized trading platform, the decentralized trading platform does not need to register an account, and can participate in the transaction by using the personal digital asset account
secondly, every transaction of the decentralized trading platform is carried out through the blockchain, and it needs to wait for the confirmation of the blockchain before the transaction is successful. At the same time, the decentralized trading platform is not responsible for keeping users' assets and private key information. On the one hand, it avoids the moral hazard of the trading platform, on the other hand, it requires you to keep your private key well
e to the low liquidity and slow transaction processing of decentralized trading platforms, the total transaction volume only accounts for 0.03% of the global total transaction volume of digital assets. At present, the tokens of airswap, kyber, 0x and omisego can be traded on huobi.pro.

2. As a blockchain researcher, many new people often ask this question. In fact, there are two main ways to invest in bitcoin. The first is to buy bitcoin directly from the corresponding digital currency exchange; The second is to mine for bitcoin

first of all, mining is the main way to obtain bitcoin, but the current threshold of mining is relatively high. If you choose to mine by yourself, first you need to understand certain technology, then download the bitcoin client and mine by yourself according to the online bitcoin mining tutorial
however, in theory, bitcoin can still be mined with computers or graphics cards. However, e to the development of mining instry in recent years, the whole network computing power of bitcoin is extremely terrible (more than supercomputers), so if you want to mine with computers or graphics cards, you can't find bitcoin, If you want to dig bitcoin, you still need to buy mining machines. Now the better mainstream mining machines in the market have to be tens of thousands. Of course, there are cheap second-hand mining machines, but these second-hand mining machines are all obsolete ones, and the electricity cost of mining is relatively high

in addition to the second way of direct purchase, the digital currency exchange is a special place for bitcoin trading. If you want to own a bitcoin, you can buy it directly with money. However, it should be noted that there are many digital currency exchanges in the market at present. Many small exchanges are specialized in cutting users and eating customer losses for a living. Therefore, when choosing an exchange, it is better to focus on the head exchange. For example, Hufu, one of the head exchanges in China, I have been using it for nearly two years, and it is very stable and safe.

3. Learning method: pet level 15 can be used to learn
go to mop "mystery of stone" to find NPC - man with mining soul, have a dialogue, and then learn mining task. Use "test pick" in kaster plain 07, 27 and border outside mop and reply NPC - man with mining soul to complete the task, Learning mining task completion

mining method:
first use the "detection rod" to detect the location of the ore point. If the area can be mined, the bottom left corner of the screen will display the mineral resources that can be explored: X mine, you can equip the "miner's pick" and then stand still to mine

4. 1) The points you ask can be exchanged for qq COINS
in the top corner of the home page, you can click to enter
1q coins -
points requirements: 369 points
level requirements: 6
reputation requirements: unlimited
maximum exchange: 5 pieces / person
2q coins -
points requirements: 699 points
level requirements: above level 7
reputation requirements: unlimited
maximum exchange Exchange: 2 copies / person
reputation requirements: unlimited
5qb -
points requirements: 1699 points
level requirements: above level 8
reputation requirements: unlimited
maximum exchange: 1 / person
reputation requirements: unlimited
(2), QQ coins are given to all Tencent games, (Q flying car, Q Three Kingdoms, etc.)
(QQ flying car)
1.
you need to equip your character with "red lantern" props

2.
you can take part in props competition or speed race, and you can win
awards
after each competition
3.
equipped with "lantern" props, you will consume one lantern for each competition
4.
every day your number of lanterns will automatically increase to 20, so you must use up the lanterns of the day, or you will lose money
(QQ Three Kingdoms)
as long as you complete the task of borrowing the east wind, you will have the opportunity to obtain Deputy materials, brocade bag and 1000 experience, and even have the opportunity to obtain Q coin and green diamond, QQ show and QQ space
Awards
procts
1. At the beginning of the activity, players can find NPC "Zhou Yu", "ZHUGE Liang" and "Sima Yi" conversations in the main cities of various countries to borrow the east wind
2. Players can borrow Dongfeng if they pay the
Insurance
certificate
gold of 1000 Three Kingdoms coins. Players can reach the altars of various countries (within the scope of novice Village) within 5 minutes after borrowing Dongfeng, and then they will win the
prize
reward
3. In the process of sending the east wind, the balloon may explode. After the explosion, the player needs to get the east wind again. As long as the player participates in the activity time, the number of times is unlimited
4. After the task is completed, the player will get the system returned security certificate, gold and experience Award. At the same time, we also have the opportunity to obtain the Deputy materials, brocade bag, Q coin, green diamond, QQ show and QQ space prizes
5,
if the player gets the prize of Q coin, green diamond, QQ show and QQ space, please click I want to
exchange the prize for
collection
and
exchange
exchange
(3) Yuanbao in paipai can be exchanged for QQ coin
the units of Yuanbao are Yuanbao and silver coins, 1 Yuanbao = 1000 silver coins. There is no need to exchange between silver coins and Yuanbao. The system will convert them automatically, that is, if 1000 silver coins are accumulated, the system will display 1 Yuanbao automatically
the purpose of patting Yuanbao
1. Exchange QB, doll and other gifts
2
3. Participate in all kinds of interesting entertainment in the community

5. To put it simply, in the past, transactions were accounted by third-party platforms (Taobao, Jingdong, etc.), and blockchain kept a of this account book for each party (consumers, businesses, third-party platforms), so there was no way to go back on it, and there were more layers of protection
let's give an example. For example, in our usual online shopping, after placing an order, our money will be transferred to the intermediary platform of the third-party payment agency. After the seller delivers the goods and the buyer confirms the receipt of the goods, the buyer will inform the payment agency to transfer the money to the seller's account
however, the transaction mode supported by blockchain technology is different. Buyers and sellers can trade directly without any intermediary platform. After the transaction between the buyer and the seller, the system publishes the transaction information in the form of broadcast, and all hosts receiving the information record the transaction after confirming that the information is correct, which means that all hosts have done data backup for the transaction. If there is a problem with the orders proced by this machine, its data information will not be affected, because there are countless machines backing up data at the same time.

6. There are many companies to choose from for Internet insurance. It's OK to choose one that suits you according to the actual situation. Generally speaking, Internet insurance is reliable

whether you buy insurance on ant financial services, micro insurance, or other third-party Internet insurance platforms, it's only on behalf of sales, and the insurance companies are the ones who underwrite, underwrite, and settle the claims. It can be understood that the third-party platform is equivalent to an "insurance agent", but the agent only sells his own company's procts, and the third-party platform will cooperate with many insurance companies, selling a wider range of procts and offering us a wider range of choices

at the time of purchase, we fill in our personal information, which seems to be filled in on the third-party platform. In fact, these information are directly submitted to the insurance company. The insurance company checks the personal information of the insured, and finally feeds back the underwriting results to the consumers through the third-party platform. In other words, underwriting is the insurance company's audit, underwriting is the insurance company's commitment, policy ownership is ultimately the insurance company, and claims are also the insurance company's compensation

so what are you worried about? Will this platform fail? What about our insurance policy after the bankruptcy? " My friend, you can relax. Even if the platform goes out of business, your insurance policy is still with the insurance company, and the insurance company will still fulfill its protection obligations as usual. If you still don't understand, you may as well take a look at "what should we do when an insurance company goes out of business?"

worried that they could not buy their own insurance, they came to Nanpa insurance for consultation. Nanpa insurance focused on the insurance field and evaluated and analyzed more than 1000 procts, including critical illness insurance, term life insurance, medical insurance and accident insurance. Consulting experience is also quite rich, users can rest assured to come to consult insurance issues< br />

7.

Not only not over age, but also at the right time

to sum up, I can clearly inform you that the 58 year old rural endowment insurance, which is now the social security of urban and rural residents, is not only under the age, but also just for two years, and can enjoy the 60 year old one-time payment policy. If you pay 3000 yuan per year, the pension cost will be 45000 yuan in 15 years. Even in medium-sized areas, the pension can be more than 500 yuan, and the pension can be recovered in eight years. In other words, after the age of 68, it will be a net profit. It's not much, but it's also the financial support for your old age. If you are in Shanghai and Beijing, it will exceed 1500 yuan, because their basic pension is high< br />